A common injury in which forceful twisting causes certain tissue in the knee to tear.
A meniscus tear is a tear in the rubbery knee cartilage that cushions the shinbone from the thighbone. The meniscus can tear with forceful twisting or rotation of the knee.
Pain, swelling, stiffness and difficulty extending the knee are symptoms. A popping sensation or a feeling that the knee is locked in place also may occur.
Treatment includes rest, ice and pain relievers. Sometimes a torn meniscus requires surgery.